Reference Data in Nantes 12 indicators covering reference data for Nantes. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 87.24 Degree days 2025 up 45.1% 673rd Cooling and heating degree days - Cities and FUAs — Change in cooling 23.91 Degree days 2025 up 846.6% 357th Cooling and heating degree days - Cities and FUAs 1,385 Degree days 2025 up 7.1% 736th Cooling and heating degree days - Cities and FUAs — Change in heating -161.19 Degree days 2025 up 36.2% 387th Precipitation - Cities and FUAs — Extreme precipitation days 5.5 Days per year 2024 up 37.5% 704th Precipitation - Cities and FUAs — Change in extreme precipitation 2.81 Days per year 2024 up 114.4% 352nd Dependency ratio - Cities and FUAs 23.6 Percentage of population aged 15-64 years 2022 up 7.8% 903rd Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 — 273rd Coastal flooding - Cities and FUAs — Built-up area exposure to 0 Percentage of built-up area 2022 — 277th Main mode of transport to work - Cities and FUAs — Employed persons 206,031 Persons 2022 up 11.6% 89th Internet speed - Cities and FUAs — Downloading speed 6.2 Percentage of national value 2025 down 85.0% 629th Internet speed - Cities and FUAs — Uploading speed 9.5 Percentage of national value 2025 down 74.4% 502nd